this post was submitted on 19 May 2025
366 points (96.9% liked)

Technology

70267 readers
4042 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS
 

"The exercise was held from May 8 to 9, 2024, at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, and at a Federal Emergency Management Agency (FEMA) site in Denver, Colorado."

Article refers to a PDF of the report it's based on:

https://www.jhuapl.edu/sites/default/files/2025-04/Space-Weather-TTX-Report-Summary-v3-FINAL.pdf

top 50 comments
sorted by: hot top controversial new old
[–] cupcakezealot@lemmy.blahaj.zone 12 points 2 days ago

good thing we got rid of fema in 2025 then

[–] ArchmageAzor@lemmy.world 57 points 3 days ago (5 children)

You know those stories where the world is reduced to a post-apocalypse after a natural event? What if that's only what happens in the US, and the rest of the world recovers with ease due to extant rescue services?

[–] REDACTED@infosec.pub 8 points 2 days ago

Oooh, so that's why apocalyptic movies are almost always only US oriented

[–] Zron@lemmy.world 17 points 3 days ago (4 children)

If it wasn’t for the stupid Darrel Dixon show, my head canon of the walking dead only affecting America would still stand.

They literally just walk, and it would be pretty obvious that everyone is infected after the first year or so of people dying from the flu and shit. Any country with competent leadership could have squashed the zombies in a couple months.

[–] jpablo68@infosec.pub 23 points 3 days ago (1 children)

After experiencing the covid-19 outbreak I am now fully convinced that a zombie apocalypse is feasible, there would be people denying the existence of the zombie virus, just going to the infected an getting bitten because they wanted a pizza or something, that and people just drenching themselves in bleach or something because they heard that keep the zombies away from some dude online. Stuff like that.

[–] LettyWhiterock@lemmy.world 7 points 2 days ago (1 children)

Stuck having to go to work in a zombie apocalypse because you're an "essential worker".

[–] gian@lemmy.grys.it 4 points 2 days ago (1 children)

Any country with competent leadership could have squashed the zombies in a couple months.

True but you underestimate people stupidity.

[–] Randomgal@lemmy.ca 4 points 2 days ago (2 children)

Imagine the zombie rights guests on a Joe Rogan podcast.

[–] gian@lemmy.grys.it 2 points 2 days ago
[–] phoenixz@lemmy.ca 1 points 2 days ago

Yeah we need to stop giving dumb idiots microphones

I’ve always thought that if I’m in a zombie apocalypse im just gonna carry super soakers filled with hydrogen peroxide

[–] ArchmageAzor@lemmy.world 8 points 3 days ago (1 children)

Isn't that the case in the 28 X later series? Like England fell to a zombie apocalypse but the rest of the world is doing fine?

[–] silasmariner@programming.dev 6 points 2 days ago

Wellllll the implications of the ending of 28 weeks later is that the rest of the world had a reprieve but are fucked eventually...

[–] kalkulat@lemmy.world 6 points 2 days ago (1 children)

There are A LOT of BIG countries with big electric grids in the world today. Which countries GRIDS get hit the worst depends on which side of the Earth is facing the 'hit'. Could the West (US, Brazil) or Europe or the East (China, India).

[–] gian@lemmy.grys.it 2 points 2 days ago

It is a little more complex than that. You cannot only consider how big is a country or how big is its grid.
If the Europe would be hit by a solar storm, assuming that not all of it was hit we can recover the grid in about a month and the blackout would not be longer than maybe a week.

But a solar storm would destroy also everything else, so how big is the grid is really irrelevant when you basically have every other piece (excluded the few hardened enough) destroyed.

[–] SharkAttak@kbin.melroy.org 7 points 2 days ago

I remember a Tumblr (maybe) post with a similar concept, but about Australia and the Mad Max series.

[–] noughtnaut@lemmy.world 8 points 3 days ago* (last edited 2 days ago) (2 children)

...and simply agrees to never, ever, set foot in North America.

I'm in.

Not sure, though, how this ploy would work out for our fine fellows in South America, Mexico, and Canada, the ones currently belabored with being the closest neighbours to The Wastelands.

[–] pjwestin@lemmy.world 6 points 3 days ago (1 children)

Not sure, though, how this ploy would work out for our fine fellows in South America and Canada, the ones currently belabored with being the closest neighbours...

Fuck Mexico, I guess.

[–] noughtnaut@lemmy.world 5 points 2 days ago

My sincere apologies, Mexico is definitely on the good list.

load more comments (1 replies)
[–] DrakeAlbrecht@lemm.ee 147 points 3 days ago (1 children)

Note: "Would Be a Catastrophe" even back when the agencies involved in mitigating the disaster still existed.

[–] andrewrgross@slrpnk.net 35 points 3 days ago (3 children)

Oy. I really don't want to see what happens when we're faced with an actual challenge. This is... yikes.

[–] UltraGiGaGigantic@lemmy.ml 26 points 3 days ago (3 children)

I would get a case of beer and go to the library and read until the internet was back on. You can't stop my escapism that easily.

[–] echodot@feddit.uk 16 points 3 days ago (2 children)

It's all right, Trump will redirect the solar flare by drawing a new line on a chart. Plasma is very accommodating as everybody is well aware.

[–] futatorius@lemm.ee 1 points 1 day ago

CMEs are not solar flares.

Can't we just rake the sun?

[–] PancakesCantKillMe@lemmy.world 15 points 3 days ago (2 children)

We could party like it's 1899!

Or instead go bonkers as society devolves:

The Carrington Event

load more comments (2 replies)
[–] jsomae@lemmy.ml 19 points 3 days ago

They said we weren't prepared for a pandemic, either.

Shit we gotta fix this.

[–] burgerpocalyse@lemmy.world 12 points 2 days ago (1 children)

im just not gonna worry about the sun

[–] samus12345@lemm.ee 19 points 2 days ago

It's gonna get you!

[–] shortwavesurfer@lemmy.zip 59 points 3 days ago* (last edited 3 days ago) (2 children)

I'm glad this threat is at least starting to be taken seriously. As an amateur radio operator, I got incredibly interested in how the weather on the sun affects radio propagation and power management here on Earth.

Better a CME than an EMP just simply because there is at least some time to prepare for a massive CME. Whereas an EMP has absolutely no warning whatsoever.

In the event of a massive CME off-grid homes and buildings are likely to fare much better because they are not connected to the power grid. The problem comes with long transmission lines where incredibly large charge differentials can build up over distance. shorter wires can't build up nearly the same amount of charge differential.

Edit: I feel it's important to mention that grid tie systems are going to be just as vulnerable as on grid because you still have the grid actually physically connected to the building.

[–] bobs_monkey@lemm.ee 19 points 3 days ago (11 children)

It's worth noting that even though a building might have solar, the systems usually disable themselves in the event of a blackout to prevent back feeding into the grid.

load more comments (11 replies)
[–] kalkulat@lemmy.world 3 points 2 days ago

As an amateur radio operator, The high bands get wiped first! 80, 160, not so much (no ionosphere? ground wave still works. Easy to throw up a long wire ... afterward). Hams (esp. ARES) will become VERY IMPORTANT for a LONG time when it happens. Field Day is a good way to prep for aftermath. (Gear can go into metal containers to escape parts damage until afterward.) Portable generators (best without a lot of electronics on them) will be needed to re-charge the batteries!

[–] solsangraal@lemmy.zip 49 points 3 days ago (1 children)

lol we couldn't even prepare for fascist takeover of the country. why tf would anyone think we'd be prepared for a solar firestorm

load more comments (1 replies)
[–] Maximumbird@lemm.ee 12 points 3 days ago (7 children)

Man you know it’s bad when you’re rooting for this or a civil war or nukes. Just to reset everything. I’m so over being an American.

load more comments (7 replies)

Don't look up

[–] ouRKaoS@lemmy.today 25 points 3 days ago (3 children)

I'm not a doomsday prepper, but stuff like this makes me want to sequester some gear...

[–] Tire@lemmy.ml 8 points 3 days ago (1 children)

I don’t think it will matter. We need modern logistics to produce and get food to people. Without that 90% of people will starve in the first few months.

It’s good to have supplies for regional disasters and events that only last a few weeks or months. But if the national grid is going to be out for a year or more and things like fuel and food can’t be transported and stored at key locations then it’s all going to shit.

load more comments (1 replies)
[–] drmoose@lemmy.world 12 points 3 days ago (5 children)

I have an old safe where i keep some old tech and power banks - just junk really but the Faraday is enough for any solar flare and i think it looks cool. Not sure what good that would do if all cell towers and satellites are fried though. Even fiber is unlikely to operate as I imagine most switches are not secured.

Last time I did research on this I came out entirely unconvinced of value of prepping here. Just the usual water, gas stove and bags of rice is really best bet and invest everything else back to local communities because economies of scale kicks ass.

[–] futatorius@lemm.ee 1 points 1 day ago

the Faraday is enough for any solar flare

Faraday cages are useful. But CMEs are not solar flares. They are very different (though sometimes loosely correlated) phenomena.

load more comments (4 replies)
load more comments (1 replies)
load more comments
view more: next ›